A Based Bayesian Wavelet Thresholding Method to Enhance Nuclear Imaging

Figure 1

Illustration of the difference between a Gaussian and a Poisson noise.

(a) Original image

(b) Profile of the line which passes by all the regions in the image (indicated on the left)

(c) Original image corrupted with a Gaussian noise

(d) Profile of the same line, showing similar noise variance in all the grey levels (weak, average, and high)

(e) Original image corrupted with a Poisson noise

(f) Profile ofthe same line, showing a noise variance which depends on the grey level intensity in the image